| GRD02QZS0 |
Dacite
|
|
California |
1 |
Ritter 154, 29 D |
| GRD02R6S0 |
Obsidian
|
Spherulitic devitrification of obsidian. Large radiating spherulites |
|
0 |
Ritter 154, 15 M |
| GRD02RAS0 |
Ankaramite
|
From University aix-marselle III, Faculte de Sciences et techniques de Saint-Jerome-Laboratorie de Petrologie |
Alabama |
0 |
Ritter 154, 16 J |
| GRD02RJS0 |
Basalt
|
Dark aphanitic massive vessicular, Plagioclase, Olivine. |
|
4 |
Ritter 154, 3 F |
| GRD02RKS0 |
Basalt
|
Massive Amygdaloidal Aphanitic rock containing secondary Calcite. |
|
4 |
Ritter 154, 3 F |
| GRD02RMS0 |
Ankaramite
|
Ankaramite with olivine(1-5 mm), cpx(1-8 mm), and plag, black groundmass |
Sao Miguel, Azores |
4 |
Ritter 154, 3 F |
| GRD02RNS0 |
Komatiite
|
Komatiite showing diagnostic spinifex texture. Olivine, Cpx, Serpentine, Magnetite. |
|
5 |
Ritter 154, 3 F |
| GRD02ROS0 |
Rhyolite
|
Aphanitic texture. |
Mexico |
2 |
Ritter 154, 3 E |
| GRD02RPS0 |
Basalt
|
Pyroxene and Feldspar bearing Basalt. Vesicles remnant from approx 2-3 mm gas bubbles |
Washington |
3 |
Ritter 154, 3 E |
| GRD02RQS0 |
Basalt
|
Two billets. Visible feldspars. |
|
2 |
Ritter 154, 3 E |
| GRD02RRS0 |
Basalt
|
Xenolith in basalt. Two thin sections-1801-2, 1801-5. |
Hawaii |
2 |
Ritter 154, 3 E |
| GRD02RTS0 |
Mafic Extrusive
|
Plagioclase and pyroxene bearing |
Oregon |
3 |
Ritter 154, 3 E |
| GRD02RVS0 |
Dacite
|
Morro Rock. Zoned Plagioclase(approx 0.5 cm), Biotite, Quartz rich groundmass. Moderately altered |
Dacite Porphyry, Morro Bay, San Luis Obispo |
3 |
Ritter 154, 3 E |
| GRD02RVS1 |
Dacite
|
Morro Rock. Zoned Plagioclase(approx 0.5 cm), Biotite, Quartz rich groundmass. Moderately altered |
California |
3 |
Ritter 154, 15 Q |
| GRD02RWS0 |
Basalt
|
Vesicular (~2-3 cm) Pahoehoe Basalt. One broken thin section |
Hawaii |
1 |
Ritter 154, 3 E |
| GRD02S0S0 |
Picrite
|
Olivine bearing basalt, large olivine phenocrysts (1-10 mm) |
Hawaii |
0 |
Ritter 154, 3 E |
| GRD02T9S0 |
Obsidian
|
Obsidian |
California |
0 |
Ritter 154, 15 M |
| GRD02TFS0 |
Dacite
|
Zoned Plagioclase phenocrysts. Avalanche deposit, devastated area. Collected 9/20/99 |
California |
1 |
Ritter 154, 29 D |
| GRD02THS0 |
Intermediate Extrusive
|
Sonora Pass lavas, GPS locations 8/15/00 |
California |
1 |
Ritter 154, 29 C |
| GRD02TJS0 |
Basalt
|
Plag-phyric. On PCT west of Butt Mountain, towards trail junction with spur to road. 9/99 |
California |
1 |
Ritter 154, 29 D |
| GRD02TLS0 |
Basalt
|
Sonora Pass SON 5. Large plag and pyroxene. |
California |
1 |
Ritter 154, 29 C |
| GRD02TMS0 |
Basalt
|
Sonora Pass lavas, SON 3 |
California |
1 |
Ritter 154, 29 C |
| GRD02TQS0 |
Intermediate Extrusive
|
Avalanche deposit. Andesite/Dacite. Collected 9/20/99 |
California |
1 |
Ritter 154, 29 D |
| GRD02TRS0 |
Volcanic
|
Sep-99 |
California |
1 |
Camp Elliott |
| GRD02TSS0 |
Volcanic
|
Sep-99 |
California |
2 |
Camp Elliott |
| GRD02TTS0 |
Basalt
|
On PCT west of Butt Mountain, towards trail junction with spur to road |
California |
1 |
Ritter 154, 29 D |
| GRD02TUS0 |
Basalt
|
Sonora Pass Lava, SON 4, 8/15/00 Possibly contains plagioclase and olivine phenocrysts |
California |
1 |
Ritter 154, 29 C |
| GRD02TXS0 |
Basalt
|
Small sample of basalt, highly altered. Original Description: Pillow basalts - good pillows |
California |
1 |
Ritter 154, 16 H |
| GRD02U0S0 |
Basalt
|
Logtown formation, pillow basalts |
California |
1 |
Ritter 154, 16 G |
| GRD02U3S0 |
Andesite
|
Plag rich Andesite dike cutting Sailor Creek formation (lower-mid J) |
California |
1 |
Ritter 154, 16 A |
